public class Test4 {
    public static void main(String[] args) {
        System.out.println(new N());
    }
}
class N {
    private int age;
    /*public String toString() {
        return "123";
    }*/

    @Override
    public String toString() {
        return "N{" +
                "age=" + age +
                '}';
    }
}
